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Finding the Fourth Proportional to 304,874.80, 457,312.20 and 80,269.90

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Solution

The fourth proportional to 304,874.80, 457,312.20 and 80,269.90 is: 120,404.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,874.80 : 457,312.20 = 80,269.90 : x
  2. Step 2: Convert to fraction form
    304,874.80/457,312.20 = 80,269.90/x
  3. Step 3: Cross multiply
    304,874.80x = 457,312.20 × 80,269.90
  4. Step 4: Simplify right side
    304,874.80x = 36,708,404,562.78
  5. Step 5: Solve for x
    x = 36,708,404,562.78/304,874.80
  6. Step 6: Final answer
    x = 120,404.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.